I have had blood in my urine for 3 months now and have tested positive for 4 uti's and now my husband has blood in his urine I was unfaithful once not proud of it but was. It possible we have an std with the only symptoms being blood in urine and my uti's

Yes, it is. Has he been tested?

There could be a possibility

Yes it is possible or other urinary tract issue.

This could be very serious and needs to be addressed ASAP