I and my husband did a lot of rubbing but I was wearing my trousers no underwear. After 2 weeks of that I got my periods. Can I get pregnant after 2 months of that?

Do you mean 'can I BE pregnant after 2 months of that?' No.

A very rare pregnancy if some sperm leaked around the edge of clothing onto the edge of the vagina. A woman can have some bleeding the first month of pregnancy. But put the two situations together, and the probability has effectively reached zero.

I highly doubt you can get pregnant from dry humping your husband for 2 months... with your clothes on.