Should I take an I-pill if there is ejaculation near the anus?

Hello doctor,

I delivered a baby five weeks back. It was a normal delivery with episiotomy. My wound has healed now. My husband and I have not resumed our sexual relationship as we are waiting for six weeks period completion as advised by the gynecologist. But last night, he was hugging me naked from the back and ejaculated near my anus. I immediately cleaned it up with water. But I have a doubt whether the sperm can go into the vagina and is there any chance of pregnancy? Also, I want to know whether I can take an emergency contraceptive pill now and within what time it must be taken? Which is the safest pill for a lactating mother and will it have side effects on the baby? Of note, I am on MA-Dha and Lactare for lactation.

Thank you doctor,

So, there is no need to take any immediate emergency pills as the chances are less right? I am anyway planning to get a copper-T insertion soon.

Thank you doctor,

The doctor asked me to get it inserted once I get my next periods. Is there any time period we need to wait after the delivery for this copper-T insertion? As only five weeks have been completed after my delivery. You asked for copper-T insertion. Kindly tell in how many days should I have it done?