Welcome to Healthcaremagic.
If it was episiotomy
sutures you mentioned above ,Yes, its not safe to get into intercourse so early a minimum of 5 months would be safe.
Most of times such incisions
are sutured using a absorb-able suture hence it is not the suture material you feeling it could be the scars
left after healing in the cut areas.
This would be necessarily emergency condition if you have bleeding after intercourse
.Do take care
Wish you good health.