Dry Spell?

I will try to make this short…

My husband and I have been married for 18 almost 19 years. For the first 17 years we would have sex once or twice a week. Then I got pregnant and had a baby and he is the best thing that has ever happened to us. My husband is the best husband in the best dad. He rubs my feet every night, he clears snow off my car every day, he tells me every day that he loves me and that I’m beautiful and we just have the best time together. We are genuinely best friends besides anything physical…

After I had the baby, we both were out of shape, and had gained a bunch of weight. He has lost all of his and I still have like 12 or 15 pounds to go. Since the baby was born, we’ve only had sex like three or four times and the baby is a year + one month (13 months) already. Three or four times in over a year just seems like hardly not at all

I know that he loves me and I love him. Has anyone else gone through such a dry spell with their significant other? I feel like we’ve been together for so long we don’t need the sex to show our love to each other, but I would still really love to have sex more. For reference, I am 39 and he is 48. Could it be our ages? Lost drive? Self conscious about our bodies? Sexed out? I’m just curious what y’all think.