This is my 5th session for laser hair removal but today has the worst side effect. Will this go away? Will it scar? (photo)

This will take some time to completely heal but it's definitely a burn from the laser, I would follow up with your provider, stay out of the sun and apply spf daily

Nope. That's not a blood clot. That's a burn from the laser. Keep the area moist - do not pick the site. If possible, get a prescription for a betamethasone ointment and keep the area well gooped up. Definitely keep it out of the sun! Wear sunscreen and do not expose that area to sunlight or you could make the area worse and hyperpigment it permanent. Hopefully it will clear without long-term problems but absolutely let your technician know that you were burned - significantly - and that lower settings much be used should you decide to do further treatments!"This answer has been solicited without seeing this patient and cannot
be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."