Had Unprotected Sex On 11th Of April As Par My

had unprotected sex on 11th of April as par my husband he might left sperm inside , so I had cipla Ipill within 2 hours . Later on 24th April I got bleeding a day before my regular periods date, and that lasts for 4 days but bleeding was light in amount then I generally have .
* in month of May I didn't seat in periods , mean while I have taken 10 nostra tablets in May month as those were prescribed me to regulate my periods
* on 4th of June , after unprotected sex once again i have taken ipill and within 3 days on 7th June I got bleeding and having cramping and unbearable pain plus the thickness of blood is very high