Can you get infection from putting hand in fish tank ?

My husband got my daughter some fishes and I usually don’t feed or clean the fish tank....but my husband told me to feed the fish cause he was going to work late so I fed the fish (usually I put the tips of my finger inside the water) but the water is somewhat dirty and he hasn’t cleaned the fish tank . I forgot I... show more My husband got my daughter some fishes and I usually don’t feed or clean the fish tank....but my husband told me to feed the fish cause he was going to work late so I fed the fish (usually I put the tips of my finger inside the water) but the water is somewhat dirty and he hasn’t cleaned the fish tank . I forgot I had a little cut on my finger !! It’s one of those cuts where the skin next to your nail is pulling off so I pulled a little peice... As soon as I took my hand out of the water I washed my hands a couple of times but now I’m scared now please don’t judge I just want to know if it’s possible or should I be concerned D:
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