GF was gone for two months, we struggled for the week she was home, now I can't

Prior to her leaving for two months, we had zero issues sexually, and I was hard virtually all the time. She left for a month, I was still horny the whole time she was gone, no erection issues.

When she came back for a week, we had to used a condom (first time using condoms together, she missed BC. Not here to be preached at for safety.) and the first time we did it was too tight. I was inside and barely felt a thing, went immediately limp and it kind of hit her emotionally. We replaced the condoms and the fitting ones worked for a couple days, but we were both so anxious about it that I wasn’t able to get it up, condom or not, for the rest of the time she was home.

Now she’s gone again for another month its been a week so far and I cant get hard, like at all. Im never randomly hard, I dont wake up with morning wood, I cant will myself hard to masturbate. I’ve never experienced this and its driving me crazy.

Like I said, prior to that negative experience after she was gone for 2 months, sex was great. She’s gone for another month now and im extremely worried when she returns this won’t have been fixed. It feels like ill never be horny or be able to get hard again ever.

For the record, we’re both in our 20s, im stupidly in love with her, and she’s extremely attractive. I dont know what’s wrong with me