Wife says I kiss weird

Through our years together, we have had the occasional physical interaction problems. Like many long term couples we have laughed them away or dealt with them. Pre-separation there was a problem, post separation and into reconciliation this problem of me "kissing weird" or "being awkward" has appeared again. I must mention that previously, she quit kissing me about two years before we separated(she was pregnant at the time she initially quit). I boldly kissed her last time it was us with no kids, she welcomed it with a big smile and then made a face. I have not changed my kissing technique since we started dating. I love kissing and value it very much. I am not here to cast blame on her, but state a few things I realize may contribute to this: 1.I am out of practice and lacked confidence for a long while. 2. She is out of practice. 3. She has definitely forgot how I kiss, it has been years. 4. As a couple, we are out of practice. This bump didn't hurt my confidence, but I don't want a repeat. Anyone have a similar experience in regards to pregnancy derailing intimacy? How do I remedy this problem? Any advice is welcomed.

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