4th Month of Accutane

Just a little backstory first I've had pimples since I was 12 didn't turn into full blown acne until about 18. I went to several derms tried all kinds of antibiotics, topicals, chemical peels, blue light therapy, microdermabrasion, skin care lines the list goes on and on I've tried it all! Nothing seemed to help much except for the blue light but I couldn't afford to keep up with it. My acne seemed to be somewhat under control from 25-29 my skin was decent for once. I got off birth control pills and about a year later my face exploded horrible painful itchy cystic acne worse than I've ever had it before, I wanted to cry and hide everyday I couldn't believe this was happening. My esthetician advised me to see a Derm my skin was so inflamed there was nothing she could do for me. I went to my appt and she suggested accutane she informed me of all the side effects and black box warnings. I was a little scared hearing all this I researched it for days and I decided to take the chance I couldn't stand my acne and the damage the scarring was doing I was desperate at this point. I'm now going on my 4th month and it's been quite the journey. I started my 1st month on 40mg nothing crazy as far as side effects just dry skin dry lips, wicked initial breakout on top of my already horribly broken out face was intense tho. Went to derm as I have to every month my triglycerides were high and my acne was very inflamed so my dose stayed at 40mg for month 2. 2nd month I got neck and lower back pain few migraines same dryness. I did notice about a week into my first month my whole body stopped producing oil I loved this part! Anyways onto month 3 dose doubled to 80mg 3-4 days after I started this dose the backs of my feet started to hurt then everything started to hurt. I feel like I'm 90yrs old my shoulders, hips, back, neck literally everything on my body hurts. The backs of my feet have been the worst when I get up they're so stiff it's hard to walk. I haven't been able to work out for almost 3 weeks now 3 reps of 5lbs feels like 30 and It seems like my pains are worse when I work out. Back to derm for 4th month checkup before I say anything to her about my concerns she says your triglyceride level is 360 that's crazy high (it's supposed to be 150 and under) I have to lower your dose back to 40mg. I said straight up to her good I don't think I can handle 80mg it knocked me on my ass. She's concerened about my foot pain being calcification of the Achilles, arthritis or bone overgrowth so she sent me for X-rays. I asked her if these problems can be permanent I told her I was reading about ppl left with permanent joint damage from accutane and it's scaring me due to the pains I'mhaving, she didn't really give me a clear answer it seems doctors are very wishy washy when it comes to this drug. I'm wondering if anyone else has experienced any joint pain, stiffness in the Achilles or just has anything to add I've been thinkng about stopping I don't want to be crippled at 30.