Sex after a bleed

I had a bleed over a 5 weeks  ago.  Wasn't given any explanation to what caused it.  Had my 12 week scan which gave no indication of what caused it. Only that a clot could be seen.  My question is do you think it's safe to have sex again ? I haven't really had the opportunity to ask my doctor or midwife.  And I'm really missing the intimacy with my husband.